52001428891 has 4 divisors (see below), whose sum is σ = 52002089272. Its totient is φ = 52000768512.

The previous prime is 52001428879. The next prime is 52001428903. The reversal of 52001428891 is 19882410025.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (52001428879) and next prime (52001428903).

It is a cyclic number.

It is not a de Polignac number, because 52001428891 - 2¹¹ = 52001426843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52001428841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193101 + ... + 375886.

It is an arithmetic number, because the mean of its divisors is an integer number (13000522318).

Almost surely, 2^52001428891 is an apocalyptic number.

52001428891 is a deficient number, since it is larger than the sum of its proper divisors (660381).

52001428891 is an equidigital number, since it uses as much as digits as its factorization.

52001428891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660380.

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 52001428891 in words is "fifty-two billion, one million, four hundred twenty-eight thousand, eight hundred ninety-one".